<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org"
      xmlns:layout="http://www.ultraq.net.nz/web/thymeleaf/layout">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        .header,.body,.footer{
            border: 1px solid red;
            height: 200px;
        }
        .body_left{
            float: left;
            border: 1px solid red;
        }
        .body_right{
            float: left;
            border: 1px solid red;
        }
    </style>
</head>
<body>
    <div class="header" th:include="~{demo/common/header::header('张三')}">

    </div>
    <div class="body">
        <div class="body_left" th:include="~{demo/common/left::left}">

        </div>
        <div class="body_right" layout:fragment="content">
            我是右边的页面
        </div>
    </div>
    <div class="footer" th:include="~{demo/common/footer::footer}">

    </div>
</body>
</html>